Answer:
4.14516129 g/mL
Explanation:
The density can be found with the following formula.
where 
is the mass and 
is the volume.
We know the mass is 25.7 grams. We must find the volume.
The volume is equal to the volume of water that is displaced. Subtract the initial volume from the final volume.
⇒ final volume - initial volume
The initial volume is 35.5 mL and the final volume is 41.7 mL.
⇒ 41.7 mL - 35.5 mL
⇒ 6.2 mL
The volume of the aluminum piece is 6.2 mL.
Now we know the mass and the volume.
Substitute the values into the formula.
The density of the aluminum sample is 4.14516129 g/mL
Hola!
We know,
1 Mole of anything has 6.02 ×
particles
According to Question,
6.02 ×
= 1 Mole
Thus,
1.8 ×
/ 6.02 ×
= 0.33 Moles
hope it helps!
Insoluble means that a substance does not dissociate in another, like mixing water and oil.
In an unsaturated solution, the solute does dissociate into solution but there is more "room" in the solution to hold more. Say if you have an amount of water that can dissolve 20g of salt but you only have 15g dissolved in it, that solution is unsaturated.
Answer:
Option C = 1.72 mol
Explanation:
Given data:
Mass of KF = 100 g
Moles of KF = ?
Solution:
First of all we have to calculate the molar mass of KF.
Molar mass of KF = 39.0983 g/mol + 18.998403 g/mol
Molar mass of KF = 58. 0967 g/mol
Formula:
Number of moles = mass/molar mass
Number of moles = 100 g/ 58.0967 g/mol
Number of moles = 1.72 mol
